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riadik2000 [5.3K]
3 years ago
7

(b) Out of 200 students in an examination of class IX, 140 passed in Maths, 120 passed in Scien

Mathematics
2 answers:
Elanso [62]3 years ago
5 0

Answer:

P(A)= probability of who passed maths

=140/200

P(B)= probability of who passed Sci

= 120/200

P(A&B)=(140+120-200+40)/200

P(A|B)'=40/200

iren [92.7K]3 years ago
3 0

Answer:

n(U)=200

n(M)=140

n(S)=120

n(MuS)complement=40

n(MuS)=n(U)-n(MuS)complement

=200-40

=160

n(MnS)=n(M)+n(S)-n(MuS)

=140+120-160

=260-160

=100

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